What is vh?

Answer 1

CSS has a lot of length units
VH - stands for viewport height.
It is 1% size of your browser's height
50vh - is 50% of browser's height

Also there is VW - it is almost the same, but uses width instead of height

If you want to use minimum of them, try using VMIN, for maximum - VMAX
It acts the same, but uses minimum/maximum value

Answer 2

Thanks!